\includegraphics[width=\textwidth]%
{example-image}some text

\includegraphics[width=\textwidth]%
{example-image} some text

\includegraphics[width=\textwidth]%
{example-image} %

% the end of the next line contains a trailing space
\includegraphics[width=\textwidth]%
{example-image}  some text
